Table 3. Association of hospital stays duration with CAT scores and modified DECAF risk categories.

One-way analysis of variance (ANOVA) was used to compare mean hospital stay duration across CAT score categories and modified DECAF risk groups. Post hoc Tukey's HSD test was performed for significant ANOVA results. Levene's test was used to verify the homogeneity of variances. ^*Statistically significant at p-value less than 0.05.

CAT: COPD Assessment Test; DECAF: Dyspnea, Eosinopenia, Consolidation, Acidemia, and Atrial Fibrillation; COPD: Chronic obstructive pulmonary disease

Hospital stay duration vs CAT scores and modified DECAF risk categories		Hospital stay duration (days)			F value	ANOVA p-value
		N (98)	Mean	S.D.
CAT score	< 10	35 (35.7%)	8.29	5.76	0.080	0.923
	10 to 20	40 (40.8%)	8.4	5.26
	> 20	23 (23.5%)	7.83	5.87
Modified DECAF score	Low risk	70 (71.4%)	7.27	4.03	13.842	0.001*
	Intermediate risk	21 (21.4%)	8.33	6.31
	High risk	7 (7.2)	17.43	8.14